Weigh mouse displays a - or + (negative or positive) weight without placement of the animal

Ai.Connect displays the weight captured from the connected scale. Check the scale display (if available) to check if the scale needs to tared or requires any other calibration.

Check there is no other weight placed on the scale. If the scale has a holding device such as a beaker, cup, cage to restrain the animal ensure the device is tared correctly

If there is no weight on the device, follow the instructions of the scale device manufacturer to tare the device.